Fireplace insert



FIG. 1 is a front, right side perspective view of a fireplace insert showing my new design;

FIG. 2 is an enlarged front elevation view thereof;

FIG. 3 is an enlarged right side elevation view thereof;

FIG. 4 is an enlarged top plan view thereof;

FIG. 5 is a front, right side perspective view of a fireplace insert showing a second embodiment of my new design;

FIG. 6 is an enlarged front elevation view of FIG. 5;

FIG. 7 is an enlarged right side elevation view of FIG. 5, the left side being a mirror image of that shown;

FIG. 8 is an enlarged top plan view of FIG. 5;

FIG. 9 is a front, right side perspective view of a fireplace insert showing a third embodiment of my new design;

FIG. 10 is an enlarged front elevation view of FIG. 9;

FIG. 11 is an enlarged right side elevation view of FIG. 9, the left side being a mirror image of that shown; and,

FIG. 12 is an enlarged top plan view of FIG. 9. 

The ornamental design for a fireplace insert, as shown and described. 